Coolplay CW Motor & CCW Motor & Gear Screw for Syma X11 X11C X13 Mini RC Quadcopter Drone Motor Set & Main Gear Cone with Shaft for Syma X11 X11C Ultra durable & light weight & super stable performance,compatible for Syma X11 X11C RC Quadcopter Easy to install Package include: 2x Anti-clockwise Motor & 2x Clockwise Motor & 1x Gear Set(4pcs)